Study the different question types that you will encounter on the GRE verbal section. The verbal section will consist of 30 questions divided between antonyms, analogies, sentence completion and reading comprehension questions.
Review a list of high-frequency GRE vocabulary words found in study guides and online. Add words you cannot easily define to your personal study list. Memorize as many of the high-frequency GRE words as you can.
Recognize that the answers to questions in the verbal section are the "best" or "most-likely" answers. Try not to rationalize answer choices.
Keep in mind that the reading comprehension questions will take the most time to complete. Try to answer the other question types quickly to save time for the reading comprehension questions.
Use practice tests and sample questions to become familiar with different question types found in the GRE verbal section.